Aerosol Microbiome over the Mediterranean Sea Diversity and Abundance
| Autor: | Ania Vichik, Natalia Belkin, Esra Mescioglu, Barak Herut, Jordan M. Eizenga, Peng Xian, Eyal Rahav, Adina Paytan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Mediterranean climate
Atmospheric Science geography geography.geographical_feature_category biology Pelagic zone lcsh:QC851-999 respiratory system Environmental Science (miscellaneous) Mineral dust biology.organism_classification complex mixtures aeromicrobiology Mediterranean sea Oceanography bioaerosols Abundance (ecology) Gammaproteobacteria Mediterranean Sea Environmental science lcsh:Meteorology. Climatology Proteobacteria airborne bacteria Oceanic basin |
| Zdroj: | Atmosphere Volume 10 Issue 8 Atmosphere, Vol 10, Iss 8, p 440 (2019) |
| ISSN: | 2073-4433 |
| DOI: | 10.3390/atmos10080440 |
| Popis: | Prokaryotic microbes can become aerosolized and deposited into new environments located thousands of kilometers away from their place of origin. The Mediterranean Sea is an oligotrophic to ultra-oligotrophic marginal sea, which neighbors northern Africa (a major source of natural aerosols) and Europe (a source of mostly anthropogenic aerosols). Previous studies demonstrated that airborne bacteria deposited during dust events over the Mediterranean Sea may significantly alter the ecology and function of the surface seawater layer, yet little is known about their abundance and diversity during &lsquo background&rsquo non-storm conditions. Here, we describe the abundance and genetic diversity of airborne bacteria in 16 air samples collected over an East-West transect of the entire Mediterranean Sea during non-storm conditions in April 2011. The results show that airborne bacteria represent diverse groups with the most abundant bacteria from the Firmicutes (Bacilli and Clostridia) and Proteobacteria (Alphaproteobacteria, Betaproteobacteria, and Gammaproteobacteria) phyla. Most of the bacteria in our samples have previously been observed in the air at other open ocean locations, in the air over the Mediterranean Sea during dust storms, and in the Mediterranean seawater. Airborne bacterial abundance ranged from 0.7 × 104 to 2.5 × 104 cells m&minus 3 air, similar to abundances at other oceanic regimes. Our results demonstrate that airborne bacterial diversity is positively correlated with the mineral dust content in the aerosols and was spatially separated between major basins of the Mediterranean Sea. To our knowledge, this is the first comprehensive biogeographical dataset to assess the diversity and abundance of airborne microbes over the Mediterranean Sea. Our results shed light on the spatiotemporal distribution of airborne microbes and may have implications for dispersal and distribution of microbes (biogeography) in the ocean. |
| Databáze: | OpenAIRE |
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